Make sure you are not blocking content.

Start Firefox in Safe Mode {web link}

A small dialog should appear. Click Start In Safe Mode (not Refresh). Is the problem still there?

One issue that seems more common lately is Firefox's Tracking Protection feature. When it is blocking content in a page, a shield icon will appear at the left end of the address bar next to the padlock icon. This article has more info on managing this feature: Tracking Protection {web link}

Same in safe mode. No content blocking either.

Thanks!

Many site issues can be caused by corrupt cookies or cache.

Warning ! ! This will log you out of sites you're logged in to. You may also lose any settings for that website.

• Delete cookies to remove the information websites have stored on your computer {web link}

• How to clear the Firefox cache {web link}

This is a new account on Windows 10.

One thing, Firefox reports the

https://accounts.firefox.com/signin?service=sync&context=fx_desktop_v3&entrypoint=menupanel

is not secure. Perhaps that is blocking access. I can access the sight with Edge and Chrome.

Please explain the problem in detail. What happens? What is the exact error messages?

I've attached Site Information from Firefox at the URL where I try to supply my account credentials.

Can I supply anything else?

Thanks, Tom

I called for more help.